Last updated: March 2, 2024
The weather in Hilo, United States, during January is characterized by an average temperature of 21°C (71°F). Highs can soar to 24°C (76°F), while lows may dip to 19°C (66°F). Typically, the humidity level in Hilo throughout January hovers around 79%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In January, Hilo averages 158 mm (6.2 inches) of rainfall, typically over the course of 20 rainy days. The month enjoys an average of 11 hours 4 minutes of daylight, with the sun shining for approximately 6 hours 49 minutes each day. Additionally, there is a 41% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In January, the UV Index in Hilo reaches a maximum of 8, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 15 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 1 | 3 | 5 | 7 | 8 | 8 | 7 | 4 | 2 | 1 | 1 | 0 |
| Exposure | Low | Moderate | High | VeryHigh | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 25 min | 30 min | 45 min | ||||||